Overall design is good. I especially like the flow and level of detail of the /features page. I also like the comparison pages, I think those are really valuable for anyone deciding to try your product (plus they show you've done your research), and I would make the links for them more prominent.

In just a few minutes of clicking around I saw a lot of typos. You should pick through your copy with a fine-toothed comb:
- Screenshot has a typo (Dashbaord)
- Title bar in firefox on linux shows a square (failed to render character) instead of the thought-bubble emoji (it looks fine in the tab but wrong in the browser title bar)
- acurate is misspelled (should be accurate)
- Is the feedback bar on the left an example of your product in action? If so, you should highlight that in the main body of the page ("Try it out!" or "See how it works")
- The 'learn more' link is broken (points to /nutshell when it should point to /features)
- "our JavaScript sniped" should be "our JavaScript snippet"
- On the /features page, 'managment' is misspelled.
- On /about page, "did not satisfy me enough" would read better without the "enough". Also, "exiting applications" should be "existing applications"